Exam 13: Object-Oriented Data Modeling

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A composition is an instance of class that is made up of more than one class.

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A(n)________ defines the form or protocol of an operation,but not its implementation.

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What is the difference between an abstract class and a concrete class?

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An abstract operation describes the implementation of an operation.

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When an object is an instance of more than one class,this is known as ________.

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When an operation may apply to two or more classes in different ways,this is known as ________.

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A diagram that shows the static structure of an object-oriented model is called a(n):

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A ________ is the implementation of an operation.

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An aggregation expresses a part-of relationship between a component object and an aggregate object.

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If a subclass of a company inherits an operation to compute a tax but extends the inherited behavior by adding a foreign surcharge,this is an example of overriding for extension.

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All of the following are benefits of object-oriented modeling EXCEPT:

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A derived attribute,association,or role is one that can be computed or derived from other attributes,associations,or roles.

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Polymorphism occurs when the same operation may apply to two or more classes in different ways.

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A(n)________ operation creates a new instance of a class.

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A state represents how an object acts.

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A graph of instances that are compatible within a class diagram is called a(n):

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The implementation of a operation is called a(n)________.

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What is encapsulation?

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An operation that applies to a class rather than an object instance is a(n):

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A class that has no direct instances,but whose descendants may have direct instances is called a(n)________.

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